<?php

    /**
     * PHPExcel_Style_Supervisor
     * Copyright (c) 2006 - 2015 PHPExcel
     * This library is free software; you can redistribute it and/or
     * modify it under the terms of the GNU Lesser General Public
     * License as published by the Free Software Foundation; either
     * version 2.1 of the License, or (at your option) any later version.
     * This library is distributed in the hope that it will be useful,
     * but WITHOUT ANY WARRANTY; without even the implied warranty of
     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     * Lesser General Public License for more details.
     * You should have received a copy of the GNU Lesser General Public
     * License along with this library; if not, write to the Free Software
     * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
     * @category   PHPExcel
     * @package    PHPExcel_Style
     * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
     * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
     * @version    ##VERSION##, ##DATE##
     */
    abstract class PHPExcel_Style_Supervisor {
        /**
         * Supervisor?
         * @var boolean
         */
        protected $isSupervisor;
        /**
         * Parent. Only used for supervisor
         * @var PHPExcel_Style
         */
        protected $parent;

        /**
         * Create a new PHPExcel_Style_Alignment
         * @param    boolean $isSupervisor        Flag indicating if this is a supervisor or not
         *                                        Leave this value at default unless you understand exactly what
         *                                        its ramifications are
         */
        public function __construct($isSupervisor = false) {
            // Supervisor?
            $this->isSupervisor = $isSupervisor;
        }

        /**
         * Bind parent. Only used for supervisor
         * @param PHPExcel $parent
         * @return PHPExcel_Style_Supervisor
         */
        public function bindParent($parent, $parentPropertyName = null) {
            $this->parent = $parent;
            return $this;
        }

        /**
         * Is this a supervisor or a cell style component?
         * @return boolean
         */
        public function getIsSupervisor() {
            return $this->isSupervisor;
        }

        /**
         * Get the currently active cell coordinate in currently active sheet.
         * Only used for supervisor
         * @return string E.g. 'A1'
         */
        public function getSelectedCells() {
            return $this->getActiveSheet()->getSelectedCells();
        }

        /**
         * Get the currently active sheet. Only used for supervisor
         * @return PHPExcel_Worksheet
         */
        public function getActiveSheet() {
            return $this->parent->getActiveSheet();
        }

        /**
         * Get the currently active cell coordinate in currently active sheet.
         * Only used for supervisor
         * @return string E.g. 'A1'
         */
        public function getActiveCell() {
            return $this->getActiveSheet()->getActiveCell();
        }

        /**
         * Implement PHP __clone to create a deep clone, not just a shallow copy.
         */
        public function __clone() {
            $vars = get_object_vars($this);
            foreach ($vars as $key => $value) {
                if ((is_object($value)) && ($key != 'parent')) {
                    $this->$key = clone $value;
                } else {
                    $this->$key = $value;
                }
            }
        }
    }
